A9 EP ENGI - Gallery Engi

• Client: Federal Roads Office FEDRO
• Site manager/reference person: Caterina Gianocca, IM Maggia Engineering SA
• Site manager: Celine Ludi
• Foreman: Diego Barberi
• Construction period: September 2024 and August 2025
• Construction costs: 4'500'000.--

Technical data:

• Debris flow material: 3'600 m³
• Roofing material: 1'300 m³
• Excavated foundation: 700 m³
• Concrete NPK D (ceiling): 1,000 m³
• Concrete NPK G: 600 m³
• Shotcrete: 10 m³
• Reinforcement: 300 t
• Prestressed anchors: 51 pcs.
• Seepage pipe: 130 m
• Surfacing: 27 t

Project description:

At the A9 EP ENGI - Engi Gallery construction site, targeted new construction and reinforcement measures are being implemented as part of the immediate measures 2 in order to ensure the load-bearing capacity of sections D and E until the long-term renovation. This includes the installation of new concrete components in the ceiling and load-bearing gallery elements, supplemented by shotcrete work in locally damaged areas. Pre-stressed anchors additionally stabilize the construction. New drainage pipes will be laid to improve drainage. Finally, the roadway was given a new surface layer as a protective layer to ensure the durability and safety of the gallery during operation.

Requirements:

• Working under traffic
• Working under debris flow